Lock for electric lamps



(No Model.)-

W. A. SAUL 82: J. H. PECK.

LOOK FOR ELECTRIC LAMPS.

,6'70. Patented Feb. 5, 1895 Warrenfl. Sam Jaco ZrfZPeeh, 1gb thebrdlfi'rg c ys.

th'vrrnn STATES PATENT rrrcs.

W'ARREN A. SAUL AND JACOB H. PECK, OF STEELTON, PENNSYLVANIA.

LOCK-FOR ELECTRIC LAMPS.

SPECIFICATION forming part of Letters Patent No. 533,670, dated February5, 1895.

Application filed March 13, 1894- $crial No. 503,466 (No model.)

To all whom, it may concern.-

Be it known that we, WARREN A. SAUL and JACOB I-I. PECK, citizens of theUnited States, residing at Steelton, in the county of Dauphin and Stateof Pennsylvania, have invented a new and useful Lock for Electric Lamps,of which the following is a specification.

This invention relates to an improved lock for securing the chains ofelectric lights to the poles or supports thereof, whereby the lamps maybe locked in a raised position and lowered at will, upon the release ofthe lock.

The object contemplated is to provide improved means for connecting thechain with the lock, whereby this connection of the chain may beautomatically effected, and whereby it may be released upon simplyretracting the,

bolt of the lock; and to this end theinvention consists in certainpeculiar features of construction, and combination and arrangement ofparts as will be hereinafter specified and finally embodied in theclaim.

In the accompanying drawings:Figure 1 represents a perspective view ofan electric light having our improvements applied; Fig. 2, a frontelevation of the lock with the cap of face plate removed; Fig. 3, avertical crosssection on line az-a: of Fig. 2; Fig. 4, a detailperspective of the tongue or link for connectin g the light chain withthe lock; Fig. 5, a perspective View showing the mode of manipulatingthe device; and Fig. 6, a view showing the key and snap-hook apart fromthe other devices.

The reference numeral 1 indicates two poles or posts, by which the light2 is supported. This is done by the supporting wire or cable 3, which ispassed from the top of one pole to another, and provided with the pulley4, over which the chain 5 passes. From the pulley i the chain 5 extendsto the pulley 6, which is, in turn, secured to the left hand pole 1. Thelight 2 is connected to the end of the chain 5 which passes over thepulley 4, so that it will hang over the center of the street, while theremaining end of the chain extends down parallel with the left hand poleand is at tached to the look, as will be more fully describedhereinafter.

7 indicates the conductor wires, which are arranged so that the light 2will be free to move up or down in the operation of our invention.

The frame or casing of the lock consists of three principal parts; theback plate 8, face plate 9, and sides 10, each of which is formed ofcast metal. Back-plate 8 is made with a plane front face, while its rearside curves inwardly so as to lie flush with the vertical sides of thepole. Formed integral with the plate 8 and curving to conform to theshape of the rear face thereof are the lugs 11, which are provided withthe countersunk openings 12, through which the screws 13 pass, and bywhich the plate 8, and consequently the whole device, is secured to thepole.

The side portion 10 of the lock is formed rectangular in shape, inconformity with the front face of plate 8, and may be rigidly andimmovably secured thereto or formed integral therewith, preferably thelatter, while the face-plate 9 is secured to the front edges thereof bymeans of the bolts 14. These bolts let extend horizontally through thelook from front to back plate, and have their heads arranged in thecountersunk openings 15, formed in the back of the plate 8, while thescrew ends of the bolts extend forward and through the openings 16, inthe plate 9. In these openings the nuts 17 are arranged, and the nuts 17are countersunk in the face plate, so as to lie flush with its outersurface. By this means the bolts Ll may be screwed up so as to securethe parts in place, and when the lock is secured to the pole, it will beimpossible to remove the parts of the lock, since the bolts can only beremoved by unscrewing them from their heads, and, for obvious reasons,this cannot be done then.

The face plate 9 is formed on its upper and lower edges with therearwardly projecting flanges 1S, and these are adapted to project overthe front edges of the sides 10, at the top and bottom thereof, andserve to prevent the snow and rain from entering the lock and rusting orotherwise injuring its mechanism.

Arranged in the right hand end of the lock casing and in the upperportion thereof, is the bolt 19, which is provided with a shank 20,extending through an opening 21 in the right hand side of the casing; Bymeans of this opening the shank is allowed free movement 2 esaevo withthe bolt, and the latter is given a normal tendency to the left by-thecoil spring 22, which surrounds the shank 20, as shown in the drawings.The normal tendency of the bolt 19 is overcome, and the movements of thebolt to the left limited by the block 23, which is formed integral withthe back-plate 8 and is arranged in the upper left hand corner thereof.This block is formed with its right the under side is the tumbler arm27, which lies adjacent to the key-seating recess 28, and which isadapted to be engaged and moved to the right by the key. Locatedadjacent to the recess 28 and secured to the plate 8 is the ward-block29, which is common to all blocks,

and which operates to prevent the use of keys other than those made forthe lock.

30 indicates the key-hole, which is formed in the plate 9, and providedwith the swinging cover or plate 3l,wherebyit is closed and whereby rainand other foreign matter is prevented from entering the lock.

Formed in the upper side of the casing sides 10 is the opening 32, whichcommunicates with the vertical grooves 33, formed in the inner sides ofthe back and face plates respectively. Through this opening the tongueor link 34 is adapted to pass, and this tongue or link is of a widththat will cause it to fit snugly within the opening and with its edgessnugly seated in the grooves 33.

The opening 32 is formed just to the right of the beveled point 24 ofthe bolt 19, so that as the link is pushed into the opening 32 it willengage the beveled point, and, guided by the grooves 33,will cause thebolt to move to the right against the tendency of its spring.

Formed in the link 34 is the vertically elongated slot 35, which isadapted for the reception of the front end of bolt 19, the said frontend being reduced in horizontal thickness so as to permit itsintroduction into the slot 35.

The upper end of the link 34 is formed with the shoulder 36' thereon,which is adapted to lie over the opening 32, and to prevent the entry ofwater and other objectionable matter. From the shoulder 36 the linkextends upwardly, and slightly forwardly, and is formed with twoopenings 37 and 38 therein. In the opening 38 the chain 5 is permanentlyfixed, whereby it is connected to the look, as will more fully appearhereinafter.

To use our invention the light 2 is connected to chain 5, as shown inthe drawings, and the remaining end of the chain connected to the link34 by means of opening 38. The lock is now secured to the left hand pole1 by the means before described, and the link 34 pushed into the opening32, whereupon it will engage face 24 of the bolt 19 and cause it to moveto the, right, until the opening or slot 35 of the link is opposite thebeveled front face 24 ofthe bolt. When the parts assume this positionthe bolt will be allowed to move to the left and pass into the slot 35,thus securely fastening the link to the lock. By this means the light 2may be hung from its support in a way which willmake it impossible formeddlers and other persons not connected therewith to reach it. If,however, an attendant desires to reach it, as will be the case when thecarbons are to be replaced or the lamp. otherwise attended to, all thatwill be necessaryfor the attendant to do,

is to connect the snap-hook 39 of the rope 40 to the eye or opening 37of thelink' 34, and insert the key 41 into the key-hole 30 and operatethe key to move the bolt 19 to the right, thus releasing the link 34 andallowing it to be withdrawn. The rope 40 is of such a length that itwill reach from the lock up to the second pulley 6, and has the key 41and snaphook 39 connected one to each end. Thus, as the attendant comesalong, all that he will have to do is to connect the snap'hook to thelink and insert the key. As soonas thelink is released the weight of thelight 2will cause it to'drop, and the attendant now grasps the rope 40and plays out slack until the light descends to a point near the groundand the link 34 goes up to pulley 6. Against the pulley 6 the link 34will bind, thus preventing farther downward movement of the lamp andholding it in the position necessary to its attention. After the lamphas been attended to, the operator, grasps the rope 40 and pulls itdown, so as to raise the light and lower the link 34. When he has thelink lowered to the lock, the link should be inserted into the opening32 and in this position it will be automatically locked, by reason ofthe operation of bolt 19, and its spring. As soon as this has been donethe snap-hook 39 is disconnected from the link and the key withdrawn,after which the operator may proceed, carrying rope 40 and itsattachments with him, to the next lamp, and go through the sameoperation.

If so desired and in case iron posts are used, the back plate 8 andsides 10, together with their permanently attached parts, could be castintegral with the post, or, if this is not preferred, the post could betapped and screws used with the lugs 11, as will be understood.

Then we have shown our appliance used in connection with the two polesystem, it will be understood that its use is not so limited, and thatit could be employed with equal advantage on single poles, or on anyother style support.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is

I which it may be connected to the remaining hole of the plate or link,substantially as described.

In testimony that we claim the foregoing as I 5 our own we have heretoaffixed our signatures in the presence of two witnesses.

WARREN A. SAUL. JACOB H. PECK. WVitnesses:

J 0s. HASLACHER, E. M. SNAVELY.

